Adafruit HUZZAH32 – ESP32 Feather Board

Aww yeah, it's the Feather you have been waiting for! The HUZZAH32 is our ESP32-based Feather, made with the official WROOM32 module.

Micro USB
Micro USB connector used for USB serial, programming, and board power.
Type · powerVoltage · 5 V USB input
JST battery
JST connector for optional LiPo battery, with onboard charging when USB is connected.
Type · powerVoltage · single-cell LiPo battery input
BAT
Positive voltage to/from the JST battery jack.
Type · powerVoltage · LiPo battery voltage
USB
Positive voltage to/from the micro USB jack when connected.
Type · powerVoltage · 5 V USB voltage
EN
3.3 V regulator enable pin, pulled up; connect to ground to disable the 3.3 V regulator.
Type · controlVoltage · 3.3 V logic

Start wiring

Analog · UART · SPI · 5 V USB input · single-cell LiPo battery input

Confirm the data interface matches your host board.

Module pins: Micro USB, JST battery, BAT, USB, 3V, GND, A0, A1. Schematik maps them to your board in the app.

Related groups

4 groups

Connectors

Sort passive connector adapters from Qwiic boards, LCD modules and microSD card adapters before assuming anything with the right plug will substitute safely.

Connectors & cables · Connectors · 28 parts

Displays

Character LCDs, SPI TFTs, e-paper modules and larger capacitive-touch TFT panels solve different display jobs. Treat display class, interface, controller, resolution, touch, refresh behaviour, storage, voltage and mounting as separate swap checks.

Displays · TFT & LCD displays · 35 parts

Air quality

Choose between MQ gas sensors, VOC/eCO2 indoor-air sensors, true CO2 modules and particulate sensors without treating every air-quality breakout as the same detector.

Sensors · Gas & air-quality sensors · 31 parts

MCUs and boards

ESP32, Arduino Uno, Raspberry Pi Pico, and compatible add-on boards for running builds.

Boards · Microcontroller boards · 24 parts

Pin	Type	Function	Voltage
Micro USB	power	Micro USB connector used for USB serial, programming, and board power.	5 V USB input
JST battery	power	JST connector for optional LiPo battery, with onboard charging when USB is connected.	single-cell LiPo battery input
BAT	power	Positive voltage to/from the JST battery jack.	LiPo battery voltage
USB	power	Positive voltage to/from the micro USB jack when connected.	5 V USB voltage
EN	control	3.3 V regulator enable pin, pulled up; connect to ground to disable the 3.3 V regulator.	3.3 V logic
3V	power	Output from the 3.3 V regulator. Adafruit notes the regulator can supply 500 mA peak, with ESP32 load reducing available current.	3.3 V output
GND	ground	Common ground pins.	0 V
A0	analog	General-purpose I/O with analogue input capability on the Feather header.	3.3 V logic/ADC
A1	analog	General-purpose I/O with analogue input capability on the Feather header.	3.3 V logic/ADC
A2	analog	General-purpose I/O with analogue input capability on the Feather header.	3.3 V logic/ADC
A3	analog	General-purpose I/O with analogue input capability on the Feather header.	3.3 V logic/ADC
A4	analog	General-purpose I/O with analogue input capability on the Feather header.	3.3 V logic/ADC
A5	analog	General-purpose I/O with analogue input capability on the Feather header.	3.3 V logic/ADC
RX	digital	Hardware UART receive pin for serial devices.	3.3 V logic
TX	digital	Hardware UART transmit pin for serial devices.	3.3 V logic
SCK	digital	SPI clock pin.	3.3 V logic
MO	digital	SPI MOSI / microcontroller-out pin.	3.3 V logic
MI	digital	SPI MISO / microcontroller-in pin.	3.3 V logic
SDA	digital	I2C data pin.	3.3 V logic
SCL	digital	I2C clock pin.	3.3 V logic

Pinout

Start wiring

Connectors

Displays

Air quality

MCUs and boards